package cn.tedu.sp06.controller;

import cn.tedu.sp01.pojo.Item;
import cn.tedu.sp01.pojo.Order;
import cn.tedu.sp01.pojo.User;
import cn.tedu.web.util.JsonResult;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.client.RestTemplate;

import java.util.List;

@RestController
@Slf4j
public class RibbonController {
    @Autowired
    private RestTemplate rt;

    // 获取商品列表
    @HystrixCommand(fallbackMethod = "getItemsFB")
    @GetMapping("/item-service/{orderId}")
    public JsonResult<List<Item>> getItems(@PathVariable String orderId) {
        // 调用远程的商品服务，获取商品列表   http://localhost:8001/{orderId}
        // {1} - RestTemplate 定义的占位符格式
        // 第三个参数是对占位符进行填充的数据

        /*
        eureka注册表：
        item-service ---- localhost:8001,localhost:8002
         */

        return rt.getForObject(
                "http://item-service/{1}",
                JsonResult.class,
                orderId);
    }

    // 减少商品库存
    @HystrixCommand(fallbackMethod = "decreaseNumberFB")
    @PostMapping("/item-service/decreaseNumber")
    public JsonResult<?> decreaseNumber(@RequestBody List<Item> items) {
        // 调用远程服务路径： http://localhost:8001/decreaseNumber
        return rt.postForObject(
                "http://item-service/decreaseNumber",
                items, //提交的协议体数据,会把集合先转成json
                JsonResult.class);
    }

    @HystrixCommand(fallbackMethod = "getUserFB")
    @GetMapping("/user-service/{userId}")
    public JsonResult<User> getUser(@PathVariable Integer userId) {
        return rt.getForObject("http://user-service/{1}",JsonResult.class,userId);
    }
    @HystrixCommand(fallbackMethod = "addScoreFB")
    @GetMapping("/user-service/{userId}/score") // ?score=1000
    public JsonResult<?> addScore(@PathVariable Integer userId, Integer score) {
        return rt.getForObject(
                "http://user-service/{1}/score?score={2}",JsonResult.class,userId,score);
    }
    @HystrixCommand(fallbackMethod = "getOrderFB")
    @GetMapping("/order-service/{orderId}")
    public JsonResult<Order> getOrder(@PathVariable String orderId) {
        return rt.getForObject("http://order-service/{1}",JsonResult.class,orderId);
    }
    @HystrixCommand(fallbackMethod = "addOrderFB")
    @GetMapping("/order-service/")
    public JsonResult<?> addOrder() {
        return rt.getForObject("http://order-service/",JsonResult.class);
    }

    /////////////////////////////////////
    public JsonResult<List<Item>> getItemsFB(String orderId) {
        return JsonResult.err().msg("获取商品列表失败");
    }
    public JsonResult<?> decreaseNumberFB(List<Item> items) {
        return JsonResult.err().msg("减少商品库存失败");
    }
    public JsonResult<User> getUserFB(Integer userId) {
        return JsonResult.err().msg("获取用户失败");
    }
    public JsonResult<?> addScoreFB(Integer userId, Integer score) {
        return JsonResult.err().msg("增加积分失败");
    }
    public JsonResult<Order> getOrderFB(String orderId) {
        return JsonResult.err().msg("获取订单失败");
    }
    public JsonResult<?> addOrderFB() {
        return JsonResult.err().msg("添加订单失败");
    }
}
